/Engine/Source/Editor/UnrealEd/Public/MeshPaintRendering.h
Batched element parameters for mesh paint dilation shaders used for seam painting
struct FMeshPaintDilateShaderParameters
float
HeightPixelOffset
UTextureRenderT...
Texture0
UTextureRenderT...
Texture1
UTextureRenderT...
Texture2
float
WidthPixelOffset